Abstract Face-centered cubic (FCC) zirconium phase has been reported in as-cast and deformed zirconium and its alloys in recent years. The present study introduces germanium (Ge) containing FCC-Zr phase in an as-cast zirconium alloy. These precipitates were rod-like shaped and distributed in parallel, with 50–300 nm in length and 10–40 nm in width. The orientation relationship between these precipitates and the hexagonal close-packed (HCP) zirconium matrix was determined through TEM: 1 ¯ 1 ¯ 0>HCP∥〈1 1 0〉FCC, {0001}HCP∥{1 1 ¯ 1}FCC. Parallel moire fringes were both observed viewed along [2 1 ¯ 1 ¯ 0]HCP and [1 0 1 ¯ 0]HCP zone axis, and how the fringe spacing was related to the crystal plane spacing was discussed.

中文翻译：

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锆合金中纳米沉淀物中的莫尔条纹

摘要 近年来，在铸态和变形锆及其合金中发现了面心立方 (FCC) 锆相。本研究在铸态锆合金中引入了含锗 (Ge) 的 FCC-Zr 相。这些沉淀物呈棒状并平行分布，长50-300 nm，宽10-40 nm。这些析出物与六方密堆积 (HCP) 锆基体之间的取向关系通过 TEM 确定：1 ¯ 1 ¯ 0>HCP∥〈1 1 0>FCC, {0001}HCP∥{1 1 ¯ 1}FCC。沿[2 1 ¯ 1 ¯ 0]HCP 和[1 0 1 ¯ 0]HCP 区轴观察到平行莫尔条纹，并讨论了条纹间距与晶面间距的关系。